BuildCalc: Free Calculators and Tools for Construction, math, Finance & Everyday Life

Free calculators and tools for construction, math, finance, health, cooking, pets and everyday life — made for the USA, UK, Pakistan, Canada, Australia and users around the world. Search below, pick a calculator, and get an instant result — no sign-up, no download.

USA • UK • Pakistan • Canada • Australia • Worldwide

Scientific Calculator
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Calculator categories

Finance2120 calculators, 26 toolsLoan, mortgage, savings and money calculatorsOpen calculators →Loans & Mortgages553 calculators, 6 toolsLoan, mortgage, EMI, debt and credit calculatorsOpen calculators →Savings & Investment899 calculators, 4 toolsSavings, investment, compound interest and return calculatorsOpen calculators →Budget & Everyday Money93 calculators, 7 toolsBudget, expenses, bills and everyday money toolsOpen calculators →Tax & Salary127 calculators, 2 toolsTax, salary, paycheck and income calculatorsOpen calculators →Business Finance186 calculatorsBusiness profit, revenue, break even and cash flow calculatorsOpen calculators →Goals & Retirement156 calculators, 1 toolGoals, retirement, pension and long term planning calculatorsOpen calculators →Personal Banking & Cards106 calculators, 6 toolsBanking, cards, Zakat and personal money toolsOpen calculators →Business101 calculators, 11 toolBusiness, money and work calculatorsOpen calculators →Crypto Tools6 toolsCrypto profit, fee and crypto toolsOpen tools →E-commerce Tools6 toolsShipping, marketplace fee and e-commerce toolsOpen tools →
Construction222 calculators, 5 toolsBuilding, paint, tile and material calculatorsOpen calculators →Real Estate62 calculatorsFree real estate calculators.Open calculators →Home and Garden Tools5 toolsGarden, soil and home toolsOpen tools →Energy & Environment80 calculators, 5 toolsFree energy and environment calculators.Open calculators →Advanced Real Estate Tools4 toolsRent yield, property tax and real estate toolsOpen tools →
Math124 calculators, 1 toolPercentage, algebra and math calculatorsOpen calculators →Conversion93 calculators, 4 toolsUnit, length, weight and temperature convertersOpen calculators →Everyday Life89 calculators, 16 toolsDaily life, date and routine calculatorsOpen calculators →Time & Date87 calculators, 1 toolFree calculators and toolsOpen calculators →Education62 calculators, 8 toolsFree education calculators.Open calculators →Kids and School Tools6 toolsGrade, exam and school toolsOpen tools →Career76 calculators, 5 toolsFree career calculators.Open calculators →Shopping81 calculatorsFree shopping calculators.Open calculators →
Health & Fitness96 calculatorsFree calculators and toolsOpen calculators →Food & Nutrition62 calculators, 1 toolFree food and nutrition calculators.Open calculators →Cooking & Kitchen96 calculators, 5 toolsFree calculators and toolsOpen calculators →Baby & Family80 calculators, 5 toolsFree baby and family calculators.Open calculators →Pet86 calculatorsDog, cat and pet age calculatorsOpen calculators →Sports62 calculators, 2 toolsFree sports calculators.Open calculators →Travel61 calculators, 6 toolsFree travel calculators.Open calculators →Automotive62 calculators, 6 toolsFree automotive calculators.Open calculators →Games82 calculators, 1 toolFree games calculators.Open calculators →Music82 calculatorsFree music calculators.Open calculators →Weather82 calculators, 1 toolFree weather calculators.Open calculators →Science61 calculatorsFree science calculators.Open calculators →Prayer and Islamic Tools5 toolsPrayer, Zakat and Islamic tools, estimates onlyOpen tools →Medical Tools9 toolsHealth estimate tools only, not medical adviceOpen tools →
Technology80 calculators, 5 toolsFree technology calculators.Open calculators →AI Tools5 toolsAI prompt, hashtag and caption toolsOpen tools →Developer Tools4 toolsJSON, Base64, code and developer toolsOpen tools →Social Media Tools3 toolsHashtag, caption and social media toolsOpen tools →SEO and Marketing Tools4 toolsMeta, slug and SEO marketing toolsOpen tools →Writing Tools3 toolsWord, sentence and writing toolsOpen tools →Design Tools4 toolsGradient, palette and design toolsOpen tools →Legal and Documents Tools4 toolsInvoice, resume and document toolsOpen tools →Photography Tools5 toolsPhoto size, aspect ratio and photography toolsOpen tools →Video Tools6 toolsVideo size, duration and video toolsOpen tools →Audio Tools5 toolsAudio size, bitrate and audio toolsOpen tools →Advanced Legal Tools4 toolsCourt fee, stamp duty and legal estimate toolsOpen tools →
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Why BuildCalc

ConstructionFinanceHealthMathCookingBusinessTravelEducationConstructionFinanceHealthMathCookingBusinessTravelEducation
Time & DateSportsTechnologyMusicWeatherGamesShoppingCareerTime & DateSportsTechnologyMusicWeatherGamesShoppingCareer

Features

Fast results

Enter numbers and get an instant result, no sign-up.

Free to use

All 4,354 calculators and tools are free, with no download.

Formula shown on the page

Calculator formulas are tested before a page is published.

Works on mobile

Every page is built to work on a phone browser.

How it works

1. Search

Type what you need in the big search on this page.

2. Calculate

Enter your own numbers and see the result instantly.

3. Plan

Use the result to plan your project, budget or routine.

Pricing

Free

$0 per month, $0 per year. Every calculator and tool on BuildCalc is free. There is no paid tier.

Blog

Free guides are added every few days on the Blog page.

Why people use BuildCalc

Drag the cards below. These are BuildCalc features, not reviews from named people.

Fast resultsNo sign-upWorks on mobileFree tools

Frequently asked questions

What is BuildCalc?

BuildCalc is a free website with 4,154 calculators and 200 other tools for construction, math, finance, health, cooking, pets and everyday life.

Are BuildCalc calculators free?

Yes, all BuildCalc calculators are free to use, with no sign-up and no download.

Do I need to sign up to use a calculator?

No, you do not need to sign up. Search for a calculator, enter your numbers, and get an instant result.

How do I find the right calculator?

Use the big search on the home page, or open one of the category boxes, such as Finance, Construction or Math.

Are the results exact?

Results are estimates and general information only, based on the numbers you enter. See each calculator's own note.

Start with a free calculator

Search below, pick a calculator, and get an instant result.

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